public override void onMyTurn()
{
base.onMyTurn();
if (TotalTurn == 0)
{
System.Console.WriteLine($"AI Turn 1");
bool isPutSuccessful = PutChess(GameDef.board_cell_length / 2, GameDef.board_cell_length / 2);
RoleMgr.ChangeNextRole();
}
else
{
MinMaxSearchCount = 0;
MinMaxSearchInfo bestPosInfo = MinMaxSearch(Model, MyChessType, true, 0, int.MinValue, int.MaxValue);
System.Console.WriteLine($"MinMaxSearchCount = {MinMaxSearchCount.ToString()}");
System.Console.WriteLine($"SearchHasResultCount = {SearchHasResultCount.ToString()}");
System.Console.WriteLine($"Turn: {(TotalTurn + 1).ToString()} {Name} Y = {bestPosInfo.Y.ToString()} X = {bestPosInfo.X.ToString() } Score = {bestPosInfo.Score.ToString()}");
bestPosInfo.Model.PrintBoard();
bool isPutSuccessful = PutChess(bestPosInfo.X, bestPosInfo.Y);
RoleMgr.ChangeNextRole();
}
}
public override void onMyTurn()
{
base.onMyTurn();
if (TotalTurn == 1)
{
System.Console.WriteLine($"AI Turn 1");
bool isPutSuccessful = PutChess(GameDef.board_cell_length / 2, GameDef.board_cell_length / 2);
}
else
{
MinMaxSearchCount = 0;
MinMaxSearchInfo bestPosInfo = MinMaxSearch(Model, MyChessType, true, 0, int.MinValue, int.MaxValue);
System.Console.WriteLine($"MinMaxSearchCount = {MinMaxSearchCount.ToString()}");
System.Console.WriteLine($"SearchHasResultCount = {SearchHasResultCount.ToString()}");
bool isPutSuccessful = PutChess(bestPosInfo.X, bestPosInfo.Y);
}
}
private MinMaxSearchInfo MinMaxSearch(Model pModel, ChessType chessType, bool isMaxLayer, int depth, int alpha, int beta)
{
MinMaxSearchCount++;
int bestScore = isMaxLayer ? int.MinValue : int.MaxValue;
MinMaxSearchInfo bestPosInfo = new MinMaxSearchInfo(-1, -1, bestScore);
//Console.WriteLine($"depth: {depth} isMaxLayer: {isMaxLayer} MinMaxSearchCount: {MinMaxSearchCount.ToString()} alpha: {alpha.ToString()} beta: {beta}");
// y, x, score
List <Tuple <int, int, int> > OrderPosScoreList = GetPossibleBestPosOrderList(pModel, chessType);
foreach (Tuple <int, int, int> PosScoreTuple in OrderPosScoreList)
{
int y = PosScoreTuple.Item1;
int x = PosScoreTuple.Item2;
Model cloneModel = pModel.Clone() as Model;
cloneModel.PutChessToBoard(x, y, chessType);
bool isWin = false;
bool isTie = false;
int tmpScore = 0;
Model tmpModel;
//when anyone win or tie, stop search
ConnectStrategy connectStrategy = new ConnectStrategy(cloneModel);
isWin = connectStrategy.IsWin(chessType);
isTie = connectStrategy.IsTie();
if (isWin)
{
Console.WriteLine($"win happen");
SearchHasResultCount++;
MinMaxSearchInfo Info = new MinMaxSearchInfo(x, y, isMaxLayer ? int.MaxValue - 1 : int.MinValue + 1);
Info.Model = cloneModel;
return(Info);
}
if (depth == MinMaxSearchDepth || isTie)
{
SearchHasResultCount++;
tmpScore = MyEvaluation.GetScore(cloneModel, MyChessType);
tmpModel = cloneModel;
//cloneModel.PrintBoard();
//Console.WriteLine($"y: {y} x: {x} score: {score}");
}
else
{
ChessType nextChessType = Utility.GetOppositeChessType(chessType);
MinMaxSearchInfo info = MinMaxSearch(cloneModel, nextChessType, !isMaxLayer, depth + 1, alpha, beta);
//===== alpha beta pruning =====
if (isMaxLayer)
{
alpha = Math.Max(alpha, info.Score);
}
else
{
beta = Math.Min(beta, info.Score);
}
if (alpha >= beta)
{
return(info);
}
//===============================
tmpScore = info.Score;
tmpModel = info.Model;
}
if (isMaxLayer)
{
if (tmpScore > bestPosInfo.Score)
{
bestPosInfo.Score = tmpScore;
bestPosInfo.X = x;
bestPosInfo.Y = y;
bestPosInfo.Model = tmpModel;
}
}
else
{
if (tmpScore < bestPosInfo.Score)
{
bestPosInfo.Score = tmpScore;
bestPosInfo.X = x;
bestPosInfo.Y = y;
bestPosInfo.Model = tmpModel;
}
}
if (depth == 0)
{
Console.WriteLine($"y: {y} x: {x} score: {tmpScore} depth: {depth} MinMaxSearchCount = {MinMaxSearchCount.ToString()}");
//bestModel.PrintBoard();
}
}
#region Not use find order list
/*
* for (int y = 0; y < GameDef.board_cell_length; y++)
* {
* for (int x = 0; x < GameDef.board_cell_length; x++)
* {
* List<List<ChessType>> board = pModel.GetBoardByCopy();
* if (board[y][x] == ChessType.None && IsPosNeedSearch(board, x, y))
* {
* Model cloneModel = pModel.Clone() as Model;
* cloneModel.PutChessToBoard(x, y, chessType);
*
* bool isWin = false;
*
* int score = 0;
*
* if (depth == MinMaxSearchDepth)
* {
* SearchHasResultCount++;
* score = MyEvaluation.GetScore(cloneModel, MyChessType);
*
* //cloneModel.PrintBoard();
* //Console.WriteLine($"y: {y} x: {x} score: {score}");
* }
* else
* {
* ConnectStrategy connectStrategy = new ConnectStrategy(cloneModel);
* isWin = connectStrategy.IsWin(chessType) || connectStrategy.IsTie();
*
* //when anyone win, stop search
* //isWin = MyEvaluation.IsEndSearch(cloneModel, chessType);
*
* if (isWin)
* {
* score = MyEvaluation.GetScore(cloneModel, MyChessType);
* }
* else
* {
* ChessType nextChessType = Utility.GetOppositeChessType(chessType);
* MinMaxSearchInfo info = MinMaxSearch(cloneModel, nextChessType, !isMaxLayer, depth + 1, alpha, beta);
*
* if (isMaxLayer)
* alpha = Math.Max(alpha, info.Score);
* else
* beta = Math.Min(beta, info.Score);
*
* if (alpha >= beta)
* return info;
*
* score = info.Score;
* }
*
* }
*
* if (depth == 0)
* {
* Console.WriteLine($"y: {y} x: {x} score: {score} depth: {depth}");
* }
*
* if (isWin)
* {
* Console.WriteLine($"Win happen y: {y} x: {x} score: {score} depth: {depth}");
* }
*
* if (isMaxLayer)
* {
* if (score > bestPosInfo.Score)
* {
* bestPosInfo.Score = score;
* bestPosInfo.X = x;
* bestPosInfo.Y = y;
* }
* }
* else
* {
* if (score < bestPosInfo.Score)
* {
* bestPosInfo.Score = score;
* bestPosInfo.X = x;
* bestPosInfo.Y = y;
* }
* }
* }
* }
* }
*/
#endregion
return(bestPosInfo);
}
private MinMaxSearchInfo MinMaxSearch(Model pModel, ChessType chessType, bool isMaxLayer, int depth, int alpha, int beta)
{
MinMaxSearchCount++;
int bestScore = isMaxLayer ? -999 : 999;
MinMaxSearchInfo bestPosInfo = new MinMaxSearchInfo(-1, -1, bestScore);
Console.WriteLine($"depth: {depth} isMaxLayer: {isMaxLayer} MinMaxSearchCount: {MinMaxSearchCount.ToString()} alpha: {alpha.ToString()} beta: {beta}");
for (int y = 0; y < GameDef.board_cell_length; y++)
{
for (int x = 0; x < GameDef.board_cell_length; x++)
{
var board = pModel.GetBoardByCopy();
if (board[y][x] == ChessType.None)
{
Model cloneModel = pModel.Clone() as Model;
cloneModel.PutChessToBoard(x, y, chessType);
int score = 0;
BoradStatus boradStatus = GetBoardStatus(cloneModel, chessType);
if (boradStatus == BoradStatus.Nothing) //沒有勝負 繼續往下找
{
ChessType nextChessType = Utility.GetOppositeChessType(chessType);
MinMaxSearchInfo info = MinMaxSearch(cloneModel, nextChessType, !isMaxLayer, depth + 1, alpha, beta);
//--------- alpha-beta pruning ---------
if (isMaxLayer)
{
alpha = Math.Max(alpha, info.Score);
}
else
{
beta = Math.Min(beta, info.Score);
}
if (alpha >= beta)
{
return(info);
}
//--------------------------------------
score = info.Score;
}
else if (boradStatus == BoradStatus.Winlose)
{
SearchHasResultCount++;
score = MyChessType == chessType ? 1 : -1;//If chess is mychessType get 1 point else get -1 point
}
else if (boradStatus == BoradStatus.Tie)
{
SearchHasResultCount++;
score = 0;
}
if (isMaxLayer)
{
if (score > bestPosInfo.Score)
{
bestPosInfo.Score = score;
bestPosInfo.X = x;
bestPosInfo.Y = y;
}
}
else
{
if (score < bestPosInfo.Score)
{
bestPosInfo.Score = score;
bestPosInfo.X = x;
bestPosInfo.Y = y;
}
}
}
}
}
return(bestPosInfo);
}
